GB1379294A - Method of forming a fluid-tight barrier in an electric cable - Google Patents

Method of forming a fluid-tight barrier in an electric cable

Info

Publication number
GB1379294A
GB1379294A GB3766372A GB3766372A GB1379294A GB 1379294 A GB1379294 A GB 1379294A GB 3766372 A GB3766372 A GB 3766372A GB 3766372 A GB3766372 A GB 3766372A GB 1379294 A GB1379294 A GB 1379294A
Authority
GB
United Kingdom
Prior art keywords
cable
fluid
pulverulent
forming
product
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3766372A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cables de Lyon SA
Original Assignee
Cables de Lyon SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cables de Lyon SA filed Critical Cables de Lyon SA
Publication of GB1379294A publication Critical patent/GB1379294A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00—Insulated conductors or cables characterised by their form
    • H01B7/17—Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28—Protection against damage caused by moisture, corrosion, chemical attack or weather
    • H01B7/282—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable
    • H01B7/285—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable
    • H01B7/288—Preventing penetration of fluid, e.g. water or humidity, into conductor or cable by completely or partially filling interstices in the cable using hygroscopic material or material swelling in the presence of liquid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • H01B13/321—Filling or coating with impervious material the material being a powder
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/14—Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Insulated Conductors (AREA)
  • Manufacturing Of Electric Cables (AREA)

Abstract

1379294 Cable moisture barrier CABLES DE LYON-ALSACIENNE-GEOFFROY DELORE 11 Aug 1972 [13 Aug 1971] 37663/72 Heading H1A A process for the manufacture of a fluid-tight barrier for an electric cable consists in filling the interstices of the cable with a pulverulent product of grain size of 100-150 microns which swells on contact with water, thus forming a fluid-tight plug if the outer sheath is punctured, the product being sprayed on at the same time as the core of the cable is laid up, and being electrostatically attracted by the conductors of the core, which are connected to earth, while the pulverulent product is fed from an insulated tank, at high voltage. To prevent disturbance of the homogeneous layer of pulverulent during tests which involve subjecting the cable to high gas pressure, crepe paper is disposed into the cable interstices between the conductors. The invention is applicable to coaxial pair homogeneous telecommunication cables.
GB3766372A 1971-08-13 1972-08-11 Method of forming a fluid-tight barrier in an electric cable Expired GB1379294A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7129736A FR2149269B1 (en) 1971-08-13 1971-08-13

Publications (1)

Publication Number Publication Date
GB1379294A true GB1379294A (en) 1975-01-02

Family

ID=9081869

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3766372A Expired GB1379294A (en) 1971-08-13 1972-08-11 Method of forming a fluid-tight barrier in an electric cable

Country Status (7)

Country Link
BE (1) BE787171A (en)
DE (1) DE2240007B2 (en)
FR (1) FR2149269B1 (en)
GB (1) GB1379294A (en)
IT (1) IT964934B (en)
LU (1) LU65875A1 (en)
NL (1) NL7210976A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2411475A1 (en) * 1977-12-06 1979-07-06 Thomson Brandt ELECTRIC CABLE RESISTANT TO THE PROPAGATION OF FIRE, AND METHOD FOR MANUFACTURING SUCH A CABLE
US4963695A (en) * 1986-05-16 1990-10-16 Pirelli Cable Corporation Power cable with metallic shielding tape and water swellable powder
US4703132A (en) * 1986-05-16 1987-10-27 Pirelli Cable Corporation Filling compound for multi-wire conductor of an electrical cable and cables including such compound
JPS6349714A (en) * 1986-08-19 1988-03-02 Sumitomo Electric Ind Ltd Manufacture of water-proof optical cable
US5010209A (en) * 1988-12-20 1991-04-23 Pirelli Cable Corp. Power cable with water swellable agents and elongated metal elements outside cable insulation

Also Published As

Publication number Publication date
FR2149269A1 (en) 1973-03-30
LU65875A1 (en) 1973-02-12
IT964934B (en) 1974-01-31
FR2149269B1 (en) 1974-03-29
DE2240007A1 (en) 1973-04-19
BE787171A (en) 1973-02-05
DE2240007B2 (en) 1980-09-18
NL7210976A (en) 1973-02-15

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Legal Events

Date Code Title Description
PS Patent sealed
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PCNP Patent ceased through non-payment of renewal fee